创建index.js(服务端)和client.html（客户端）
<!doctype html>
<html>
<head>
<title>Socket.IO chat</title>
<style>
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font: 13px Helvetica, Arial; }
form { background: #000; padding: 3px; position: fixed; bottom: 0; width: 100%; }
form input { border: 0; padding: 10px; width: 90%; margin-right: .5%; }
form button { width: 9%; background: rgb(130, 224, 255); border: none; padding: 10px; }
#messages { list-style-type: none; margin: 0; padding: 0; }
#messages li { padding: 5px 10px; }
#messages li:nth-child(odd) { background: #eee; }
</style>
</head>
<body>
<ul id="messages"></ul>
<form action="">
<input id="m" autocomplete="off" /><button>Send</button>
</form>
<script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/2.1.1/socket.io.dev.js"></script>
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script>
var socket = io();
//var socket = io('https://peer.eztest.org:8888');
$(function () {
var socket = io();
$('form').submit(function(){
socket.emit('chat message', $('#m').val());
$('#m').val('');
return false;
});
//捕获 chat message事件
/*socket.on('chat message', function(msg){
$('#messages').append($('<li>').text(msg));
});*/
});
</script>
</body>
</html>
var app = require('express')();
var http = require('http').Server(app);
var io = require('socket.io')(http);
app.get('/', function(req, res){
//res.send('<h1>Hello world</h1>');
res.sendFile('/workspace/es6/client.html');
});
//io.emit('some event',{ for: 'everyone' });
io.on('connection', function(socket){
console.log('a user connected');
socket.on('disconnect', function(){
console.log('user disconnected');
});
//接受客户端发送事件
socket.on('chat message', function(msg){
console.log('message: ' + msg);
//io.emit('chat message',msg);
});
//广播
//socket.broadcast.emit('hi');
});
http.listen(3000, function(){
console.log('listening on *:3000');
});
运行node
node index.js
